Mercurial > hg > ngx_http_bytes_filter_module
annotate ngx_http_bytes_filter_module.c @ 12:48cdd1bfa48e
Correctly handle last ignored buffer.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Sat, 02 Aug 2008 15:03:13 +0400 |
parents | 47a21c299f11 |
children | b85e679606f4 |
rev | line source |
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0
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1 |
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2 /* |
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3 * Copyright (C) Maxim Dounin |
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4 */ |
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5 |
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6 #include <ngx_config.h> |
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7 #include <ngx_core.h> |
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8 #include <ngx_http.h> |
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9 |
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10 |
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11 typedef struct { |
4 | 12 ngx_flag_t enable; |
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13 } ngx_http_bytes_conf_t; |
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14 |
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15 |
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16 typedef struct { |
4 | 17 off_t start; |
18 off_t end; | |
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19 } ngx_http_bytes_t; |
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20 |
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21 |
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22 typedef struct { |
4 | 23 off_t offset; |
24 ngx_array_t ranges; | |
25 ngx_http_bytes_t *range; | |
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26 } ngx_http_bytes_ctx_t; |
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27 |
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28 |
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29 static void *ngx_http_bytes_create_conf(ngx_conf_t *cf); |
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30 static char *ngx_http_bytes_merge_conf(ngx_conf_t *cf, void *parent, |
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31 void *child); |
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32 static ngx_int_t ngx_http_bytes_init(ngx_conf_t *cf); |
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33 |
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34 |
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35 static ngx_command_t ngx_http_bytes_commands[] = { |
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36 |
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37 { ngx_string("bytes"), |
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38 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
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39 ngx_conf_set_flag_slot, |
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40 NGX_HTTP_LOC_CONF_OFFSET, |
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41 offsetof(ngx_http_bytes_conf_t, enable), |
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42 NULL }, |
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43 |
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44 ngx_null_command |
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45 }; |
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46 |
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47 |
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48 static ngx_http_module_t ngx_http_bytes_module_ctx = { |
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49 NULL, /* preconfiguration */ |
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50 ngx_http_bytes_init, /* postconfiguration */ |
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51 |
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52 NULL, /* create main configuration */ |
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53 NULL, /* init main configuration */ |
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54 |
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55 NULL, /* create server configuration */ |
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56 NULL, /* merge server configuration */ |
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57 |
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58 ngx_http_bytes_create_conf, /* create location configuration */ |
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59 ngx_http_bytes_merge_conf /* merge location configuration */ |
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60 }; |
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61 |
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62 |
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63 ngx_module_t ngx_http_bytes_filter_module = { |
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64 NGX_MODULE_V1, |
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65 &ngx_http_bytes_module_ctx, /* module context */ |
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66 ngx_http_bytes_commands, /* module directives */ |
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67 NGX_HTTP_MODULE, /* module type */ |
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68 NULL, /* init master */ |
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69 NULL, /* init module */ |
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70 NULL, /* init process */ |
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71 NULL, /* init thread */ |
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72 NULL, /* exit thread */ |
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73 NULL, /* exit process */ |
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74 NULL, /* exit master */ |
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75 NGX_MODULE_V1_PADDING |
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76 }; |
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77 |
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78 |
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79 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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80 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
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81 |
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82 |
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83 static ngx_int_t |
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84 ngx_http_bytes_header_filter(ngx_http_request_t *r) |
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85 { |
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86 u_char *p, *last; |
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87 off_t start, end, len; |
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88 ngx_uint_t suffix, bad; |
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89 ngx_http_bytes_t *range; |
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90 ngx_http_bytes_conf_t *conf; |
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91 ngx_http_bytes_ctx_t *ctx; |
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92 enum { |
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93 sw_start = 0, |
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94 sw_first_byte_pos, |
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95 sw_first_byte_pos_n, |
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96 sw_last_byte_pos, |
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97 sw_last_byte_pos_n, |
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98 sw_done |
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99 } state = 0; |
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100 |
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101 conf = ngx_http_get_module_loc_conf(r, ngx_http_bytes_filter_module); |
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102 |
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103 if (!conf->enable || r->args.len == 0) { |
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104 return ngx_http_next_header_filter(r); |
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105 } |
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106 |
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107 p = (u_char *) ngx_strnstr(r->args.data, "bytes=", r->args.len); |
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108 |
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109 if (p == NULL) { |
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110 return ngx_http_next_header_filter(r); |
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111 } |
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112 |
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113 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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114 "bytes header filter: r %p", r); |
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115 |
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116 p += sizeof("bytes=") - 1; |
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117 last = r->args.data + r->args.len; |
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118 |
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119 /* create context */ |
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120 |
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121 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_bytes_ctx_t)); |
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122 if (ctx == NULL) { |
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123 return NGX_ERROR; |
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124 } |
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125 |
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126 if (ngx_array_init(&ctx->ranges, r->pool, 1, sizeof(ngx_http_bytes_t)) |
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127 == NGX_ERROR) |
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128 { |
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129 return NGX_ERROR; |
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130 } |
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131 |
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132 /* |
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133 * bytes= contain ranges compatible with RFC 2616, "14.35.1 Byte Ranges", |
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134 * but no whitespaces permitted |
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135 */ |
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136 |
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137 bad = 0; |
2
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138 len = 0; |
7 | 139 suffix = 0; |
140 start = 0; | |
141 end = 0; | |
1
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142 |
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143 while (p < last) { |
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144 |
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145 switch (state) { |
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146 |
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147 case sw_start: |
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148 case sw_first_byte_pos: |
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149 if (*p == '-') { |
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150 p++; |
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151 suffix = 1; |
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152 state = sw_last_byte_pos; |
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153 break; |
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154 } |
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155 state = sw_first_byte_pos_n; |
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156 |
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157 /* fall through */ |
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158 |
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159 case sw_first_byte_pos_n: |
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160 if (*p == '-') { |
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161 p++; |
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162 state = sw_last_byte_pos; |
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163 break; |
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164 } |
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165 if (*p < '0' || *p > '9') { |
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166 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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167 "bytes header filter: unexpected char '%c'" |
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168 " (expected first-byte-pos)", *p); |
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169 bad = 1; |
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170 break; |
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171 } |
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172 start = start * 10 + *p - '0'; |
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173 p++; |
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174 break; |
0
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175 |
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176 case sw_last_byte_pos: |
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177 if (*p == ',' || *p == '&' || *p == ';') { |
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178 /* no last byte pos, assume end of file */ |
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179 end = r->headers_out.content_length_n - 1; |
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180 state = sw_done; |
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181 break; |
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182 } |
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183 end = 0; |
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184 state = sw_last_byte_pos_n; |
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185 |
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186 /* fall though */ |
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187 |
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188 case sw_last_byte_pos_n: |
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189 if (*p == ',' || *p == '&' || *p == ';') { |
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190 state = sw_done; |
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191 break; |
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192 } |
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193 if (*p < '0' || *p > '9') { |
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194 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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195 "bytes header filter: unexpected char '%c'" |
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196 " (expected last-byte-pos)", *p); |
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197 bad = 1; |
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198 break; |
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199 } |
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200 end = end * 10 + *p - '0'; |
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201 p++; |
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202 break; |
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203 |
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204 case sw_done: |
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205 range = ngx_array_push(&ctx->ranges); |
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206 if (range == NULL) { |
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207 return NGX_ERROR; |
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208 } |
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209 |
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210 if (suffix) { |
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211 start = r->headers_out.content_length_n - end; |
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212 end = r->headers_out.content_length_n - 1; |
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213 } |
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214 |
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215 /* note: range->end isn't inclusive, while last-byte-pos is */ |
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216 |
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217 range->start = start; |
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218 range->end = end + 1; |
2
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219 len += range->end - range->start; |
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220 |
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221 if (*p == ',') { |
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222 p++; |
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223 state = sw_first_byte_pos; |
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224 break; |
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225 } |
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226 |
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227 goto done; |
0
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228 |
1
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229 } |
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230 |
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231 if (bad) { |
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232 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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233 "bytes header filter: invalid range specification"); |
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234 return ngx_http_next_header_filter(r); |
0
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235 } |
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236 } |
1
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237 |
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238 switch (state) { |
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239 |
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240 case sw_last_byte_pos: |
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241 end = r->headers_out.content_length_n - 1; |
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242 |
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243 /* fall through */ |
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244 |
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245 case sw_last_byte_pos_n: |
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246 range = ngx_array_push(&ctx->ranges); |
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247 if (range == NULL) { |
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248 return NGX_ERROR; |
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249 } |
0
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250 |
1
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251 if (suffix) { |
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252 start = r->headers_out.content_length_n - end; |
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253 end = r->headers_out.content_length_n - 1; |
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254 } |
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255 |
12
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256 if (start > end) { |
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257 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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258 "bytes header filter: invalid range specification"); |
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259 return ngx_http_next_header_filter(r); |
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260 } |
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261 |
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262 range->start = start; |
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263 range->end = end + 1; |
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264 len += range->end - range->start; |
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265 |
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266 break; |
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267 |
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268 default: |
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269 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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270 "bytes header filter: invalid range specification"); |
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271 return ngx_http_next_header_filter(r); |
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272 |
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273 } |
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274 |
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275 done: |
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276 r->headers_out.content_length_n = len; |
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277 |
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278 if (r->headers_out.content_length) { |
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279 r->headers_out.content_length->hash = 0; |
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280 r->headers_out.content_length = NULL; |
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281 } |
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282 |
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283 ngx_http_set_ctx(r, ctx, ngx_http_bytes_filter_module); |
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284 |
10 | 285 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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286 "bytes header filter: new length %O", |
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287 r->headers_out.content_length_n); |
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288 |
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289 return ngx_http_next_header_filter(r); |
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290 } |
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291 |
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292 |
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293 static ngx_int_t |
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294 ngx_http_bytes_body_filter(ngx_http_request_t *r, ngx_chain_t *in) |
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295 { |
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296 off_t size; |
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297 ngx_uint_t i; |
4 | 298 ngx_chain_t **ll, *cl, *dcl; |
299 ngx_buf_t *buf, *b; | |
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300 ngx_http_bytes_ctx_t *ctx; |
4 | 301 ngx_http_bytes_t *range, *last; |
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302 |
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303 if (in == NULL) { |
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304 return ngx_http_next_body_filter(r, in); |
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305 } |
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306 |
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307 ctx = ngx_http_get_module_ctx(r, ngx_http_bytes_filter_module); |
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308 |
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309 if (ctx == NULL) { |
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310 return ngx_http_next_body_filter(r, in); |
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311 } |
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312 |
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313 buf = in->buf; |
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314 |
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315 if (ngx_buf_special(buf)) { |
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316 return ngx_http_next_body_filter(r, in); |
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317 } |
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318 |
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319 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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320 "bytes body filter: r %p, in %p", r, in); |
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321 |
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322 range = ctx->ranges.elts; |
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323 |
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324 for (i = 0; i < ctx->ranges.nelts; i++) { |
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325 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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326 "bytes body filter: %O-%O", range->start, range->end); |
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327 range++; |
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328 } |
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329 |
4 | 330 range = ctx->range; |
331 | |
332 if (range == NULL) { | |
333 range = ctx->range = ctx->ranges.elts; | |
334 } | |
335 | |
336 last = ctx->ranges.elts; | |
337 last += ctx->ranges.nelts; | |
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338 |
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339 /* optimized version for last range and last buffer */ |
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340 |
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341 if (range == last - 1 && buf->last_buf) { |
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342 |
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343 size = ngx_buf_size(buf); |
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344 |
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345 if (range->start > ctx->offset + size || range->end < ctx->offset) { |
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346 |
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347 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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348 "bytes body filter: last buffer ignored"); |
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349 |
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350 buf->pos = buf->last; |
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351 |
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352 cl = ngx_alloc_chain_link(r->pool); |
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353 if (cl == NULL) { |
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354 return NGX_ERROR; |
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355 } |
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356 |
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357 b = ngx_calloc_buf(r->pool); |
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358 if (b == NULL) { |
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359 return NGX_ERROR; |
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360 } |
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361 |
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362 b->last_buf = 1; |
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363 |
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364 cl->buf = b; |
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365 cl->next = NULL; |
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366 |
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367 return ngx_http_next_body_filter(r, cl); |
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368 } |
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369 |
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370 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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371 "bytes body filter: last buffer, %d", size); |
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372 |
3
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373 if (buf->in_file) { |
8
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374 if (range->start > ctx->offset) { |
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375 buf->file_pos += range->start - ctx->offset; |
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376 } |
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377 if (range->end < ctx->offset + size) { |
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378 buf->file_last -= ctx->offset + size - range->end; |
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379 } |
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380 } |
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381 |
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382 if (ngx_buf_in_memory(buf)) { |
8
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383 if (range->start > ctx->offset) { |
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384 buf->pos += (size_t) (range->start - ctx->offset); |
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385 } |
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386 if (range->end < ctx->offset + size) { |
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387 buf->last -= (size_t) (ctx->offset + size - range->end); |
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388 } |
3
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389 } |
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390 |
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parents:
2
diff
changeset
|
391 return ngx_http_next_body_filter(r, in); |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
392 } |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
393 |
11
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
394 for (ll = &in, cl = in; cl; cl = cl->next, ctx->offset += size) { |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
395 |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
396 buf = cl->buf; |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
397 size = ngx_buf_size(buf); |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
398 |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
399 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
400 "bytes body filter: b %d", size); |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
401 |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
402 if (ngx_buf_special(buf)) { |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
403 /* pass out anyway */ |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
404 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
405 "bytes body filter: special buffer"); |
11
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
406 ll = &cl->next; |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
407 continue; |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
408 } |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
409 |
4 | 410 next: |
11
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
411 if (range->start > ctx->offset + size || range->end < ctx->offset) { |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
412 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
413 "bytes body filter: fully ignored buffer"); |
11
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
414 buf->pos = buf->last; |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
415 *ll = cl->next; |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
416 continue; |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
417 } |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
418 |
11
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
419 /* we should either free or reuse original buffer */ |
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
420 |
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
421 if (range == last - 1 || range[1].start > ctx->offset + size) { |
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
422 b = buf; |
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
423 goto fixup; |
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
424 } |
4 | 425 |
426 b = ngx_calloc_buf(r->pool); | |
427 if (b == NULL) { | |
428 return NGX_ERROR; | |
429 } | |
430 | |
431 b->in_file = buf->in_file; | |
432 b->temporary = buf->temporary; | |
433 b->memory = buf->memory; | |
434 b->mmap = buf->mmap; | |
435 b->file = buf->file; | |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
436 |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
437 if (buf->in_file) { |
4 | 438 b->file_pos = buf->file_pos; |
439 b->file_last = buf->file_last; | |
440 } | |
441 | |
442 if (ngx_buf_in_memory(buf)) { | |
443 b->pos = buf->pos; | |
444 b->last = buf->last; | |
445 } | |
446 | |
447 dcl = ngx_alloc_chain_link(r->pool); | |
448 if (dcl == NULL) { | |
449 return NGX_ERROR; | |
450 } | |
451 | |
452 *ll = dcl; | |
453 dcl->buf = b; | |
454 dcl->next = cl->next; | |
455 ll = &dcl->next; | |
456 | |
457 if (buf->last_buf && range == last - 1) { | |
458 b->last_buf = 1; | |
459 } | |
460 | |
11
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
461 fixup: |
4 | 462 if (b->in_file) { |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
463 |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
464 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
465 "bytes body filter: in file, %O-%O", |
4 | 466 b->file_pos, b->file_last); |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
467 |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
468 if (range->start > ctx->offset) { |
4 | 469 b->file_pos += range->start - ctx->offset; |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
470 } |
5
be5e612dd602
More readable calculations, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4
diff
changeset
|
471 if (range->end < ctx->offset + size) { |
be5e612dd602
More readable calculations, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4
diff
changeset
|
472 b->file_last -= ctx->offset + size - range->end; |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
473 } |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
474 |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
475 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
476 "bytes body filter: in file fixed, %O-%O", |
4 | 477 b->file_pos, b->file_last); |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
478 } |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
479 |
4 | 480 if (ngx_buf_in_memory(b)) { |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
481 |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
482 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
483 "bytes body filter: in memory, %p-%p", |
4 | 484 b->pos, b->last); |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
485 |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
486 if (range->start > ctx->offset) { |
4 | 487 b->pos += (size_t) (range->start - ctx->offset); |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
488 } |
5
be5e612dd602
More readable calculations, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4
diff
changeset
|
489 if (range->end < ctx->offset + size) { |
be5e612dd602
More readable calculations, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4
diff
changeset
|
490 b->last -= (size_t) (ctx->offset + size - range->end); |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
491 } |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
492 |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
493 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
494 "bytes body filter: in memory fixed, %p-%p", |
4 | 495 b->pos, b->last); |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
496 } |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
497 |
4 | 498 if (range->end < ctx->offset + size) { |
499 range++; | |
500 if (range < last) { | |
501 goto next; | |
502 } | |
503 } | |
11
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
504 |
47a21c299f11
Fix work with multiple buffers.
Maxim Dounin <mdounin@mdounin.ru>
parents:
10
diff
changeset
|
505 ll = &cl->next; |
3
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
506 } |
3e8648918913
Body filter buffers fixup, currently limited to one range only.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
507 |
0
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
508 return ngx_http_next_body_filter(r, in); |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
509 } |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
510 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
511 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
512 static void * |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
513 ngx_http_bytes_create_conf(ngx_conf_t *cf) |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
514 { |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
515 ngx_http_bytes_conf_t *conf; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
516 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
517 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_bytes_conf_t)); |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
518 if (conf == NULL) { |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
519 return NGX_CONF_ERROR; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
520 } |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
521 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
522 conf->enable = NGX_CONF_UNSET; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
523 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
524 return conf; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
525 } |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
526 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
527 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
528 static char * |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
529 ngx_http_bytes_merge_conf(ngx_conf_t *cf, void *parent, void *child) |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
530 { |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
531 ngx_http_bytes_conf_t *prev = parent; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
532 ngx_http_bytes_conf_t *conf = child; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
533 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
534 ngx_conf_merge_value(conf->enable, prev->enable, 0); |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
535 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
536 return NGX_CONF_OK; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
537 } |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
538 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
539 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
540 static ngx_int_t |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
541 ngx_http_bytes_init(ngx_conf_t *cf) |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
542 { |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
543 ngx_http_next_header_filter = ngx_http_top_header_filter; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
544 ngx_http_top_header_filter = ngx_http_bytes_header_filter; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
545 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
546 ngx_http_next_body_filter = ngx_http_top_body_filter; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
547 ngx_http_top_body_filter = ngx_http_bytes_body_filter; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
548 |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
549 return NGX_OK; |
8aec31ab4d52
Bytes filter module skeleton, currently does nothing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
550 } |